Surface faults and folds (shown in black) were mapped by Dubertret (1955), Ponikarov (1966) and Searle (1994), or are from the present investigation and limited remote-sensing imagery interpretation. Subsurface structures (shown in red) are modified from the Top Lower Cretaceous structure map (Figure 12b, Brew et al., 2001). This level was chosen as it is cut by most faults but is relatively close to the surface. Note that the sense of movement on the faults may change according to the particular structural level considered.